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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Maths > Chapter 10 - Vector Algebra > 6. Find, I a I and I b I if (a + b) . (a – b) and I a I = 8 I b I.

6. Find, I a I and I b I if (a + b) . (a – b) and I a I = 8 I b I.